You get a low score on one of your math classes, and you had to take an extra class.

You and Baek Dohwa end up the only people in the classroom, because the professor didn't want to stay in the classroom until night, so the both of you were just advised to hand it in the teacher's office when you're done.

As you were about to get up and go home because you were done, you're locked in with Dohwa. The door was shut.

"Why so nervous?" Dohwa chuckles. How is he so calm?